If you haven't been amazed today, this video will do the trick. Even as I write this, my jaw is still on the ground because what this dude did with one hand is just simply amazing. Prepare to be blown away by this one-handed guys cover of Van Halen's 'Eruption'.

John Denner, who was only born with one hand, posted this video up on his YouTube account. In addition to the amazing cover of Van Halen, he even offers some instructional videos.

Check out this instructional video he put on for an elementary school, showing how he has been able to play with only one hand. Very inspirational.